$ git clone -n https://src.fedoraproject.org/rpms/R-jpeg.git /var/lib/mock/f37-build-641428-71938/root/chroot_tmpdir/scmroot/R-jpeg
Cloning into '/var/lib/mock/f37-build-641428-71938/root/chroot_tmpdir/scmroot/R-jpeg'...
$ git reset --hard 8d491d5b908544aec122f85ec9d29e478211f49e
HEAD is now at 8d491d5 rebuild for R 4.2.1, update to 0.1-9